A city has designed a survey to collect information about residents’ opinions about city services. Which of the following describes a scenario in which nonresponse bias is likely present?
Answers
Bias refers to scenarios which might affect the ability of a statistical experiment to generalize, hence affecting the validity of research. Non-response bias occurs when majority of subjects fail to respond during a survey. Hence, a likely scenario is ; surveys were mailed to 500 people, and 200 of the surveys were completed and returned.
- Non - response bias has to do with a situation whereby a large percentage of the selected samples from a population do not respond or fail to participate in the experiment or survey.
- If 200 surveys were returned, then 300 of the sample participants did not respond. Which means 60% of the sample are non-responsive.
Therefore, a scenario where surveys were mailed to 500 people, and 200 of the surveys were completed and returnedexemplifies a non - response bias.
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Final answer:
Nonresponse bias may occur if a significant portion of the population doesn't respond to a survey due to reasons like absence during survey administration, inability to access needed technology, or indifference towards the subject. Bias may also occur if specific demographic groups, notably impacted by the surveyed services, cannot be adequately reached or represented.
Explanation:
Nonresponse bias can occur in a number of situations when collecting resident opinions about city services through a survey. For instance, nonresponse bias may be present if a significant segment of the city's population does not respond to the survey. There may be various reasons for this, such as individuals not being at home when the survey is administered, people not having access to the technology required to complete the survey (like internet or a phone), or simply choosing not to participate because they don't feel strongly about the city services.
Furthermore, another scenario that might introduce nonresponse bias is if city services affect different demographic groups in drastically different ways. For instance, younger populations who may benefit from certain city services may be harder to reach due to long-working hours, increased commute times, or general increased mobility compared to older residents. If these groups do not or cannot respond, it skews the sample and does not provide a true representation of the entire population's opinions on city services.
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x + 2y = 7
3x - 2y = -3
Answers
Answers
n, n+2, n+4
they add to 195
n+n+2+n+4=195
3n+6=195
subtract 6
3n=189
divide 3
n=63
63+2=65
63+4=67
the numbers are 63,65,67
The equations at right relate the number of nickels, x, and the
number of dimes, y. Graph each equation. How many nickels and
how many dimes does Manny have?
R 5-2
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Answers
7 dimes and 3 nickels
Answers
the function is x^2-9, so all you have to do is replace x with a number. for example, 2.
so 2^2-9 is -5. the plot would be 2, -5. basically, plug in a number to be the x coord, and whatever number you get will be your y coord.
after you graph a few plots (doing the same thing above), draw a line through all of them.
if the line goes up towards the right top corner, it's increasing. if it goes down the right bottom corner, it's decreasing.
Answers
Final answer:
To find the rate at which the lawn sprinkler would fill the pool if used alone, subtract the rate of the hose from the combined rate. The equation is rs = 1/5 - 1/8.
Explanation:
To determine the rate at which the lawn sprinkler would fill the pool if used alone, we can set up an equation using the concept of rates. Let r be the rate at which the sprinkler fills the pool. If it takes 8 minutes for Byron to fill the pool with just the hose, then the rate of the hose alone is 1 pool/8 minutes, or rh = 1/8. If it takes 5 minutes to fill the pool when both the hose and sprinkler are used together, then the combined rate is 1 pool/5 minutes, or rc = 1/5.
The rate of the sprinkler alone, rs, can be determined by subtracting the rate of the hose from the combined rate. Thus, we have rs = rc - rh. Substituting the given values, we have rs = 1/5 - 1/8.
Therefore, the equation that can be used to determine the rate at which the lawn sprinkler would fill the pool if used alone is rs = 1/5 - 1/8.
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Answers
Answer:
69 inches
Step-by-step explanation:
mutiply 46 and .50 then add that to 46 then you get your answer
Final answer:
The playhouse should be 69 inches tall.
Explanation:
To ascertain the height of the playhouse, we embark on a straightforward calculation. It involves deriving 50% of Will's cousin's height and subsequently adding this value to the cousin's actual height. Starting with the cousin's height, which is 46 inches, we calculate half of it by multiplying 46 by 0.5, yielding 23 inches. This represents half of the cousin's height.
To determine the playhouse's overall height, we combine this value with the cousin's original height: 46 inches (cousin's height) + 23 inches (50% of cousin's height) equals 69 inches in total. Therefore, the height of the playhouse stands at 69 inches. This method showcases the application of percentages and simple addition to solve real-world problems, making it a valuable skill in practical mathematics.
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